Home / 761,669.40-1,051,101.60-422,137.68

Finding the Fourth Proportional to 761,669.40, 1,051,101.60 and 422,137.68

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Solution

The fourth proportional to 761,669.40, 1,051,101.60 and 422,137.68 is: 582,548.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,669.40 : 1,051,101.60 = 422,137.68 : x
  2. Step 2: Convert to fraction form
    761,669.40/1,051,101.60 = 422,137.68/x
  3. Step 3: Cross multiply
    761,669.40x = 1,051,101.60 × 422,137.68
  4. Step 4: Simplify right side
    761,669.40x = 443,709,590,868.29
  5. Step 5: Solve for x
    x = 443,709,590,868.29/761,669.40
  6. Step 6: Final answer
    x = 582,548.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.